Question

   use C++ language

1. Output the prime numbers between 1 and 1000
2. Ask the user for a color. If they choose "red", use a while loop to output "red" 5 times. If they choose "green", output "green" seven times with a for loop. If they choose anything else, tell them to choose a better color.
3. Create a random number between 1 and 6

Answer 1

Answer 1:

#include <iostream>

using namespace std;

//checks and returns true if given num is prime

bool isPrime(int aI) {

    for (int i = 2; i < aI; i++)

      if (aI % i == 0)

        return false;

    return true;

  }

int main(){

//iterating from 1-1000

  for(int i=1;i<1000;i++){

    if(isPrime(i)){

      cout<<i<<" ";

    }

    

  }

  

return 0;

}

Answer 2:

#include <iostream>

using namespace std;

int main(){

string str;

cout<<"Choose color: ";

cin>>str;

int i=0;

if(str=="green"){

while(i++<5)

cout<<"green"<<endl;

}

else if(str=="red"){

for( i=0;i<7;i++)

cout<<"red"<<endl;

}

else{

cout<<"Choose better color:";

}

return 0;

}

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Answer 3:

#include <iostream>
#include <stdlib.h>
#include<time.h>
using namespace std;
// Driver program
int main(void)
{
// Use current time as seed for random generator
srand(time(0));
//generating random number between 1-100
cout<<rand()%6+1;
}

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If you like my answer please rate and help me it is very Imp for me